Datasets:
| Year,Cote d'Ivoire,Bulgaria | |
| 1960,31307.0,-1112.0 | |
| 1964,40125.0,505.0 | |
| 1969,48192.0,-3204.0 | |
| 1973,78963.0,-5409.0 | |
| 1978,31822.0,-62769.0 | |
| 1982,53384.0,-1860.0 | |
| 1987,45028.0,357.0 | |
| 1992,104006.0,-120552.0 | |
| 1996,125556.0,-21520.0 | |
| 2001,-76679.0,-30726.0 | |
| 2005,-117342.0,-14435.0 | |
| 2010,-182689.0,-21668.0 | |
| 2014,-23011.0,-2180.0 | |
| 2019,2043.0,-2156.0 | |
| 2024,7838.0,524.0 | |